Ecclesiastes is a book of wisdom. The kind of wisdom that it teaches, however, is not of the purely philosophical variety, but is a spiritual sagacity combined with practical skill in living. John Ritenbaugh explains that this kind of godly wisdom, if applied, will protect a Christian as he experiences the trials and tribulations of life in this world.
Solomon states succinctly in Ecclesiastes 1:15, "What is crooked cannot be made straight," a truism that most people with a little experience in life know to be the case. Harsh words cannot be unsaid. Wicked deeds cannot be undone. David Grabbe explains the Bible's take on crookedness—some of which God initiates.
David C. Grabbe: An incident in John 21 contains a powerful lesson that must be kept in mind when considering our part of our Father's business. The first half of John 21 contains a significant miracle, the eighth and last of the Messianic signs found in the book of John. The miracle—a great catch of fish—is a strong echo of the time when Jesus called these fishermen three and a half years before. ...
Richard Ritenbaugh, responding to a challenge of our understanding concerning Satan the Devil, systematically substantiates Satan's existence. Christ was an eyewitness to Satan's fall from heaven, and Isaiah 14 and Ezekiel 28 verify the veracity of this event. Jude and Peter add detail regarding the sins of the angels, and their confinement as demons. Sadly, we as humans share the prison cell inhabited by Satan and his fallen demons. Pride, vanity, presumption, and self-absorption led to Satan's demise—being cast out as a profane thing. Satan's madness (that he is his own god) is the spirit of this world, and he still possesses great spiritual and political power on this earth, even to deceive the very elect. We become protected from Satan's destruction by 1) the blood of the Lamb, implying our deepening relationship with God; 2) the conduct of our lives, constantly adding to our character; and 3) the willingness to sacrifice for righteousness.
John Ritenbaugh focuses upon vision - an especially vivid picture in the mind's eye (undergirded by faith, scriptural revelation, and prompted by God's Holy Spirit) to anticipate and plan for events and results which have not yet occurred. This foresight or revelation, strengthened by analyzing, comparing, and applying scriptural principles, produces a common (or uncommon) sensical prudence of conduct, insuring that a person's life (temporal or eternal) is preserved and plans fulfilled.
John Ritenbaugh warns that presumptuous sins carry far greater penalties than those committed out of weakness. No sacrifice can be made for sins done deliberately. A person who sins presumptuously deliberately sets his will to do what he knows is wrong. Nadab and Abihu, Ananias and Sapphira, and Uzzah, all totally aware of the penalties for what they were contemplating, arrogantly rebelled against God's clear and unambiguous instructions. We need to realize that it is impossible for God to act unjustly, and soberly reflect on God's mercy and grace as a prod to repent.